Single dissociation findings of ADHD deficits in vigilance but not anterior or posterior attention systems. |
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Authors: | Huang-Pollock, Cynthia L. Nigg, Joel T. Halperin, Jeffrey M. |
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Abstract: | Following a distributed network model of visuospatial attention, the authors used an A-X version of the Continuous Performance Test and a covert orienting paradigm to examine the vigilance, anterior, and posterior attention systems. Compared with control participants without attention-deficit/hyperactivity disorder (ADHD), children with the predominantly inattentive (ADHD-I) and combined (ADHD-C) subtypes had lower sensitivity (d') to detect targets from nontargets. Children with ADHD-C, but not ADHD-I, additionally had a highly activated response style (lnβ). Performance for both subtypes decreased to a greater extent over time in a manner consistent with problems in sustained attention. Together, these results suggest the presence of vigilance system deficits in participants with both ADHD subtypes. However, consistent with previous meta-analytic work, there was no evidence for anterior or posterior system orienting dysfunctions in either subtype. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
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Keywords: | attention deficit hyperactivity disorder (ADHD) visuospatial orienting Continuous Performance Test vigilance sustained attention |
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